Decorated artilleryman Edgar Mason was forced to find new work when the British Empire replaced its foot soldiers with monstrous machines. Agamemnon Frost, however, is far from the foppish man-about-town he appears to be. He's working to protect the Earth from an alien invasion being planned by a face-changing creature known as Pandarus. And on the night he plans to confront the aliens, he enlists Mason to assist him. For a man to love a man is a serious crime in Victorian England. But when Mason meets Frost, his heart thunders and his blood catches fire.

It's 2050, and humans are an endangered species. Lieutenant Robert Sutton has survived the collapse of civilization by luck, his wits, and a chance mutation that makes him immune to the nanovirus that has wiped out millions. Now, his compound of survivors is surrounded by the infected, who are driven by the need to spread the contagion through sex. It is only a matter of time before they attack. So when Sutton is assigned to interrogate a prisoner who claims to have overcome the infection, he immediately suspects a trap.

Kell is one of the last Travelers - magicians with a rare, coveted ability to travel between parallel universes. As such, he can choose where he lands. There's Grey London, dirty and boring, without any magic, ruled by a mad King George. Then there's Red London, where life and magic are revered, and the Maresh Dynasty presides over a flourishing empire. There's White London, ruled by whoever has murdered their way to the throne. And once upon a time, there was Black London...but no one speaks of that now.

Once upon a time, there was a little boy. His belly full of laughter, his life full of joy. Until one day, something changed; stripped his innocence away. The hole inside making space for the devil to come and play.

Cursed by the malevolent spirit of the Headless Horseman, Ireland Crane seeks a way to break free from her soul crushing bond. Croaking ravens. Telltale hearts. Dizzying time travel. Coercive witchcraft. The lines between fact and fiction blur as the works of Washington Irving, Edgar Allen Poe, HG Wells, and Nathaniel Hawthorne come alive around her in this thrilling three book series.

A clandestine race of half-dragon, half-humans known as dragon-shifters lives among us. Bastian, leader of the Nightfury dragon clan, is sworn to protect humankind at all costs. For him, honor and duty always come first. When the clan dictates he take a human mate to sire a son, he falters, aware that for a human to birth a dragon-shifter she must die. Myst, the woman given into his care, is the most extraordinary he’s ever met, and though he can’t bear the thought of harming her, he is bound by duty.

England, 1851: When Clara Chapman receives an intriguing invitation to spend Christmas at an English manor home, she is hesitant yet feels compelled to attend - for if she remains the duration of the 12 day celebration, she is promised a sum of 1,000 pounds. But is she walking into danger? It appears so, especially when she comes face to face with one of the other guests - her former fiancé, Benjamin Lane.

Most people avoid the dreaded Whitechapel district. For Honoria Todd, it's the last safe haven. But at what price? Blade is known as the master of the rookeries - no one dares cross him. It's been said he faced down the Echelon's army single-handedly, that ever since being infected by the blood craving he's been quicker, stronger, almost immortal. When Honoria shows up at his door, his tenuous control comes close to snapping. She's so...innocent. He doesn't see her backbone of steel - or that she could be the very salvation he's been seeking.

Leander McLoughlin is leader of the Ikati, an ancient tribe of beautiful, savage shape-shifters who live hidden in the forests of England. Their survival is rooted in secrecy, a secrecy threatened by the very existence of one raised outside the tribe. Charged with capturing her before she can expose their secret, Leander tracks the unsuspecting outsider to Southern California. The great warrior is prepared for a fight — but not for the effect the courageous young beauty has on his heart.

Violin prodigy Etta Spencer had big plans for her future, but a tragedy has put her once-bright career at risk. Closely tied to her musical skill, however, is a mysterious power she doesn't even know she has. When her two talents collide during a stressful performance, Etta is drawn back hundreds of years through time.

Briana turned her back on her Zyne witch heritage to chase her dream career abroad. But when a tragic accident calls her back to her small town island roots, a spell cast in her grandmother's dying moments opens her to Oracle powers she's spent her whole life avoiding. Now, an enemy of old has surfaced, hungry for vengeance...and Bri's soul. Unprepared and untrained, she must harness the magic buried deep within her to defeat the demon of her past and save the man she loves.

Nineteen years ago, I was plucked from the heart of a bloody massacre that spared nobody else. Small. Fragile. An enigma. Now ward to a powerful High Master who knows too much and says too little, I lead a simple life, never straying from the confines of an imaginary line I've drawn around the castle grounds.

Born into a life of secrets and service, Chrysabelle's body bears the telltale marks of a comarré - a special race of humans bred to feed vampire nobility. When her patron is murdered, she becomes the prime suspect, which sends her running into the mortal world... and into the arms of Malkolm, an outcast vampire cursed to kill every being from whom he drinks. Now, Chrysabelle and Malkolm must work together to stop a plot to merge the mortal and supernatural worlds.

In the Halow system, one of Earth’s three sister star systems, tek and magic - humans and fae - are at war. Kesh Lasota is a ghost in the machine. Invisible to tek, she’s hired by the criminal underworld to carry illegal messages through the Halow system. But when one of those messages kills its recipient, Kesh finds herself on the run with a bounty on her head and a quick-witted marshal on her tail. Proving her innocence should be straightforward. Until a warfae steals the evidence she needs.

The final book in USA Today best-selling author Kristen Callihan's critically acclaimed Darkest London series!